Modbus Serial Communication Solution – ProSoft Technology MVI56-101M | MVI56 Series
Where This Product Is Used
The ProSoft Technology MVI56-101M is a Modbus master/slave communication module designed for the Allen-Bradley ControlLogix platform. It is widely deployed across demanding industrial environments where legacy Modbus serial devices must integrate seamlessly with modern Rockwell Automation control systems.
Typical application scenarios include:
- Oil & Gas: Integrating Modbus RTU field instruments (flow meters, pressure transmitters, RTUs) into ControlLogix-based SCADA systems at wellheads and pipeline stations.
- Water & Wastewater Treatment: Connecting Modbus-enabled drives, analyzers, and sensors to centralized PLC control panels for plant-wide monitoring.
- Power Generation & Utilities: Bridging legacy Modbus protection relays and meters into ControlLogix architectures for substation automation.
- Manufacturing & Assembly Lines: Enabling communication between ControlLogix PLCs and Modbus-based variable frequency drives (VFDs), HMIs, and weighing systems.
- Building Automation & HVAC: Linking Modbus RTU/ASCII HVAC controllers and energy meters to plant-level control networks.
- Chemical & Pharmaceutical Processing: Providing reliable serial communication to Modbus field devices in hazardous and regulated process environments.
Technical Specifications
| Part Number | MVI56-101M |
| Manufacturer | ProSoft Technology |
| Series | MVI56 |
| Platform Compatibility | Allen-Bradley ControlLogix (1756 chassis) |
| Protocol | Modbus RTU / Modbus ASCII |
| Module Function | Modbus Master & Slave |
| Serial Ports | 1 × RS-232 / RS-485 configurable |
| Baud Rate | 300 – 115,200 bps |
| Data Bits | 7 or 8 |
| Parity | None, Even, Odd |
| Backplane Interface | ControlLogix 1756 backplane |
| Power Consumption | 800 mA @ 5 VDC (from backplane) |
| Operating Temperature | 0°C to 60°C (32°F to 140°F) |
| Storage Temperature | -40°C to 85°C |
| Humidity | 5% to 95% non-condensing |
| Weight | 2,720 g (module + packaging) |
| Certifications | CE, UL, cUL |
Why Engineers Specify This Model
- Proven Modbus Integration: The MVI56-101M provides a robust, field-tested solution for connecting Modbus RTU/ASCII devices to ControlLogix without custom programming overhead.
- Flexible Serial Configuration: Supports both RS-232 and RS-485 wiring topologies, accommodating point-to-point and multi-drop network architectures.
- Dual Master/Slave Operation: Can operate simultaneously as a Modbus master (polling field devices) and slave (responding to upstream SCADA or DCS queries).
- Seamless Rockwell Integration: Data is mapped directly into the ControlLogix controller tags via the backplane, simplifying ladder logic and Studio 5000 programming.
- Diagnostic & Troubleshooting Tools: Built-in LED status indicators and ProSoft Configuration Builder (PCB) software provide real-time diagnostics without additional hardware.
- Long Product Lifecycle: ProSoft Technology’s MVI56 series is a mature, well-documented platform with extensive global support resources.
Complete System Bill of Materials
For a complete Modbus-to-ControlLogix integration system, engineers typically specify:
- ProSoft Technology MVI56-101M — Modbus Communication Module (this item)
- Allen-Bradley 1756-A7 or 1756-A13 — ControlLogix Chassis (7 or 13 slot)
- Allen-Bradley 1756-PA72 or 1756-PB72 — ControlLogix Power Supply
- Allen-Bradley 1756-L7x or 1756-L8x — ControlLogix CPU (e.g., 1756-L73)
- Allen-Bradley 1756-EN2T — EtherNet/IP Communication Module (for SCADA connectivity)
- RS-232 or RS-485 shielded cable — Field wiring to Modbus devices
- ProSoft Configuration Builder (PCB) Software — Free download from ProSoft Technology
Compliance & Industry Standards
- CE Marking — Compliant with EU EMC and Low Voltage Directives
- UL / cUL Listed — Recognized for use in North American industrial installations
- Modbus Protocol Standard — Fully compliant with the Modbus.org specification for RTU and ASCII modes
- RoHS Compliant — Meets EU Restriction of Hazardous Substances requirements
- IEC 61131-2 — Programmable controller equipment standard compliance
Quality Assurance & Sourcing
At Konmask.com, every ProSoft Technology MVI56-101M unit is sourced through verified industrial automation supply channels. Our quality assurance process includes:
- Visual inspection and label verification against ProSoft Technology factory markings
- Firmware version and serial number documentation upon request
- Secure anti-static packaging for safe international shipping
- Full traceability records maintained for B2B procurement compliance
We specialize in supplying hard-to-find, discontinued, and long-lead-time automation components to system integrators, OEMs, and plant maintenance teams worldwide.
How to Source This Part
- Add to Cart — Place your order directly through Konmask.com for fast processing.
- Request a Quote — For bulk orders, project BOM sourcing, or freight inquiries, contact our team at support@konmask.com.
- Lead Time — In-stock units ship within 1–3 business days. Out-of-stock units are sourced within 5–15 business days depending on availability.
- Export & Customs — We support international shipments with full commercial invoice and HS code documentation for customs clearance.
Application-Specific FAQ
Q: Is the MVI56-101M compatible with all ControlLogix chassis sizes?
A: Yes. The MVI56-101M occupies one slot in any standard 1756 ControlLogix chassis (4, 7, 10, or 13 slot) and communicates via the backplane.
Q: Can this module communicate with multiple Modbus slave devices simultaneously?
A: Yes. As a Modbus master, the MVI56-101M can poll multiple slave devices on the RS-485 multi-drop bus (up to 247 slave addresses per the Modbus standard).
Q: Does the MVI56-101M support Modbus TCP/IP?
A: No. The MVI56-101M is a serial Modbus module (RTU/ASCII). For Modbus TCP/IP over Ethernet, ProSoft offers the MVI56E-MNETC module.
Q: What software is required to configure the MVI56-101M?
A: ProSoft Configuration Builder (PCB) is the free configuration tool. Studio 5000 Logix Designer is required for ControlLogix ladder logic programming.
Q: Is this module suitable for use in hazardous locations?
A: The MVI56-101M itself is not ATEX/IECEx rated. For hazardous area installations, consult your system integrator regarding appropriate enclosure and zener barrier solutions.
Q: Can Konmask.com provide a test report or certificate of conformance?
A: Yes. Certificate of conformance and inspection documentation are available upon request for B2B and project procurement orders.
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